Hiya
I found one of these useful at times, usually during the night, I bought the "calpol cold kit" from mothercare and it had one, with some calpol, a thermometer and a medicine spoon etc in it. I didn't actually buy it till I really needed it though.
I'd wait and see what happens, if you are having problems you could always get a Karvol plug in and chuck a wet towel over the radiator, I found both of these things were loads of help with a snotty nose.